From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/mips/fw/sni/sniprom.c | 152 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 152 insertions(+) create mode 100644 kernel/arch/mips/fw/sni/sniprom.c (limited to 'kernel/arch/mips/fw/sni/sniprom.c') diff --git a/kernel/arch/mips/fw/sni/sniprom.c b/kernel/arch/mips/fw/sni/sniprom.c new file mode 100644 index 000000000..6aa264b98 --- /dev/null +++ b/kernel/arch/mips/fw/sni/sniprom.c @@ -0,0 +1,152 @@ +/* + * Big Endian PROM code for SNI RM machines + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) + * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +/* special SNI prom calls */ +/* + * This does not exist in all proms - SINIX compares + * the prom env variable "version" against "2.0008" + * or greater. If lesser it tries to probe interesting + * registers + */ +#define PROM_GET_MEMCONF 58 +#define PROM_GET_HWCONF 61 + +#define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) +#define PROM_ENTRY(x) (PROM_VEC + (x)) + +#define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR)) +#define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV)) +#define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF)) +#define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF)) + +#ifdef CONFIG_64BIT + +/* O32 stack has to be 8-byte aligned. */ +static u64 o32_stk[4096]; +#define O32_STK &o32_stk[sizeof(o32_stk)] + +#define __PROM_O32(fun, arg) fun arg __asm__(#fun); \ + __asm__(#fun " = call_o32") + +int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int)); +char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *)); +void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *)); +u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *)); + +#define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x) +#define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x) +#define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x) +#define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK) + +#else +#define _prom_putchar(x) ___prom_putchar(x) +#define _prom_getenv(x) ___prom_getenv(x) +#define _prom_get_memconf(x) ___prom_get_memconf(x) +#define _prom_get_hwconf(x) ___prom_get_hwconf(x) +#endif + +void prom_putchar(char c) +{ + _prom_putchar(c); +} + + +char *prom_getenv(char *s) +{ + return _prom_getenv(s); +} + +void *prom_get_hwconf(void) +{ + u32 hwconf = _prom_get_hwconf(); + + if (hwconf == 0xffffffff) + return NULL; + + return (void *)CKSEG1ADDR(hwconf); +} + +void __init prom_free_prom_memory(void) +{ +} + +/* + * /proc/cpuinfo system type + * + */ +char *system_type = "Unknown"; +const char *get_system_type(void) +{ + return system_type; +} + +static void __init sni_mem_init(void) +{ + int i, memsize; + struct membank { + u32 size; + u32 base; + u32 size2; + u32 pad1; + u32 pad2; + } memconf[8]; + int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; + + + /* MemSIZE from prom in 16MByte chunks */ + memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; + + pr_debug("IDProm memsize: %u MByte\n", memsize); + + /* get memory bank layout from prom */ + _prom_get_memconf(&memconf); + + pr_debug("prom_get_mem_conf memory configuration:\n"); + for (i = 0; i < 8 && memconf[i].size; i++) { + if (brd_type == SNI_BRD_PCI_TOWER || + brd_type == SNI_BRD_PCI_TOWER_CPLUS) { + if (memconf[i].base >= 0x20000000 && + memconf[i].base < 0x30000000) + memconf[i].base -= 0x20000000; + } + pr_debug("Bank%d: %08x @ %08x\n", i, + memconf[i].size, memconf[i].base); + add_memory_region(memconf[i].base, memconf[i].size, + BOOT_MEM_RAM); + } +} + +void __init prom_init(void) +{ + int argc = fw_arg0; + u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1); + int i; + + sni_mem_init(); + + /* copy prom cmdline parameters to kernel cmdline */ + for (i = 1; i < argc; i++) { + strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i])); + if (i < (argc - 1)) + strcat(arcs_cmdline, " "); + } +} -- cgit 1.2.3-korg